Spirometer with multi-stage fixed orifice

Details Spirometer with multi-stage fixed orifice Spirometer with multi-stage fixed orifice

1989-06-22

1991-02-12

Isabella, David J.

Surgery

Truss

Pad

128725, A61B 508

Patent

active

049915916

ABSTRACT:
A spirometer for measuring breathing functions of a human subject includes a housing and a hollow elongate body with a first opening through which the subject inhales or exhales, a second opening through which the breath enters the elongate body when the subject inhales or discharges from the body when the subject exhales, and a third opening disposed between said first and second openings. The spirometer also includes a pressure transducer in fluid communication with the third opening of the elongate body. This transducer measures the pressure of the breath moving through the elongate body. A plug member disposed proximate the second opening of the elongate body closes a predetermined portion of the second opening when the rate of flow of the breath through the elongate body reaches a predetermined level.

REFERENCES:
patent: 3086515 (1963-04-01), Jones
patent: 3321976 (1967-05-01), Jones
patent: 3512521 (1970-05-01), Jones
patent: 3527206 (1970-09-01), Jones
patent: 3533398 (1970-10-01), Jones
patent: 3589190 (1971-06-01), Jones
patent: 3771512 (1973-11-01), Jones et al.
patent: 3977394 (1976-08-01), Jones et al.
patent: 3993050 (1976-11-01), Robinson et al.
patent: 4250890 (1981-02-01), Jones et al.
patent: 4259967 (1981-04-01), Vooren et al.
patent: 4296758 (1981-12-01), Garbe
patent: 4307729 (1981-12-01), Hart et al.
patent: 4333476 (1982-06-01), Downing, Jr.
patent: 4558710 (1985-12-01), Eichler
patent: 4706685 (1987-11-01), Jones, Jr. et al.
patent: 4841982 (1989-06-01), Nikiforov et al.
patent: 4852583 (1989-08-01), Walker

Affiliated with

Also associated with

Rating

Spirometer with multi-stage fixed orifice does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spirometer with multi-stage fixed orifice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spirometer with multi-stage fixed orifice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-13730